Left 4 Dead 2

So I tried to enable sv_cheats, and this came up: "Can't use cheats now; please exit to main menu and start your own listen server with "map mapname" so that you could enable cheats." I went back to the menu and created a lobby. All I found was "Official Dedicated", "Best Available Dedicated", "Local Server" and "Steam Group Server". How can I create a Listen server? Is there anything I'm doing wrong, or something I have to do?

hello, I misunderstood, I'm new in left for dead 2, which is the way of cheating to have advantages in battle mode for example? I found items to regenerate special infected kill us in a second shot in the head without any any bot! I found it impossible or were cheating! Could you explain me something more about it? thank you very much

But yeah to start a listen server go to options > keyboard & mouse > make sure that developer console is set to enable then press the `~ key to the left of the 1 key and type in map then select a map from the list ie map c2m1_highway

Light traps can be enabled vs. mode! but not as traps and send hordes of zombies or create a special infected, or point you in the head automatic survivors! that's how it's done? is there any server that does not allow these cheats? thanks guys